Family-based association study of IGF1 microsatellites and height, weight, and body mass index

Fehringer GO, H.; Knight, J. A.; Paterson, A. D.; Dite, G. S.; Giles, G. G.; Southey, M. C.; Andrulis, I. L.; Hopper, J. L.; Boyd, N. F. (2010) Family-based association study of IGF1 microsatellites and height, weight, and body mass index. J Hum Genet 55:255-258

Height, weight, and body mass index (BMI) are partly heritable, known to be associated with chronic diseases, and are linked to circulating insulin-like growth factor I (IGF-I) concentrations. IGF-I concentrations are also partly heritable and thus genetic variation at IGF1 could influence height, weight, BMI and the risk of developing chronic diseases. Our objective was to examine the association of genetic variation at IGF1 with height, weight and BMI using a sample of premenopausal women. A family-based study design was used to investigate the association of three IGF1 CA repeat variants at 5' (5'CA), intron 2 (In2CA) and 3' (3'CA) with these anthropometric measures. We analyzed the data for 827 families of different sizes and configurations, which included 1520 premenopausal women. Nominally significant associations (P